[root@an-c07n01 ~]# sysctl -a | egrep '(r|w)mem'
vm.lowmem_reserve_ratio = 256	256	32
net.core.wmem_max = 20971520
net.core.rmem_max = 20971520
net.core.wmem_default = 124928
net.core.rmem_default = 124928
net.ipv4.tcp_wmem = 2097152	20971520	20971520
net.ipv4.tcp_rmem = 2097152	20971520	20971520
net.ipv4.udp_rmem_min = 4096
net.ipv4.udp_wmem_min = 4096


[root@an-c07n02 ~]# sysctl -a | egrep '(r|w)mem'
vm.lowmem_reserve_ratio = 256	256	32
net.core.wmem_max = 20971520
net.core.rmem_max = 20971520
net.core.wmem_default = 124928
net.core.rmem_default = 124928
net.ipv4.tcp_wmem = 2097152	20971520	20971520
net.ipv4.tcp_rmem = 2097152	20971520	20971520
net.ipv4.udp_rmem_min = 4096
net.ipv4.udp_wmem_min = 4096